I need help determining the weight, in pounds, of a volleyball-sized sphere comprised of pure titanium. I can provide the following facts necessary for the equation: Assume the circumference of the sphere is 65 centimeters. Assume the sphere is solid, not hollow. Titanium has an atomic mass of 47.876 and a density of 4.506 grams. Any help on this would be appreciated. NOTE: This is not for homework. If you must know, it is necessary to determine if someone is capable of creating the sphere in question in a fantasy setting role-playing game.